+\r
+ /* The devdata member has different meanings depending upon whether\r
+ a block oriented or character oriented device is being accessed.\r
+ For block devices, devdata holds an EFI handle to the open file or directory.\r
+ For character devices, devdata points to the device's IIO structure,\r
+ if it has one. It may be NULL indicating a non-interactive character\r
+ device.\r
+ */\r